Category: Operating System

Getting started with DevStack as OpenStack playground environment on Ubuntu

December 3, 2016

I was recently looking to deploy a minimal installation of OpenStack to use as a development environment and to minimise the complexity of installing a complete OpenStack environment where I can build and tear down the environment with minimal effort. This is where DevStack comes into play, as to quote: DevStack is a series of … More Getting started with DevStack as OpenStack playground environment on Ubuntu

Windows 10 / Cisco WebEx – Invalid input or system error. Please try again or contact your site administrator’

October 10, 2015

Recently when trying to run Cisco WebEx and join a Live Meeting on Microsoft Windows 10, I received the following error message: Invalid input or system error. Please try again or contact your site administrator In order to provide a workaround to the issue, I was required to run Internet Explorer 11 in Developer Mode … More Windows 10 / Cisco WebEx – Invalid input or system error. Please try again or contact your site administrator’

Windows Server 2012 virtual machines stop responding at splash screen

February 21, 2015

I recently discovered an issue on a restart of a virtual machine running the guest operating system Windows Server 2012 where following a restart the virtual machine would stop responding at the splash screen and required a manual shutdown and power on to restart the virtual machine. From investigation is a known issue caused by … More Windows Server 2012 virtual machines stop responding at splash screen

Group Policy Error 0x8007000d

June 26, 2014

Recently on applying all computer group policy settings on a client, I was receiving the following error message:   The client-side extension could not remove computer policy settings for ‘Group Policy Object Name{Unique ID}’ because it failed with error code ‘0x8007000d The data is invalid.’ See trace file for more details.   The cause of the error would … More Group Policy Error 0x8007000d

A very important patch for Windows 8.1 and Server 2012 R2

April 14, 2014

It would appear that Microsoft Windows 8.1 and Server 2012 R2 are only thirty days away from not receiving security updates, or more precisely from the beginning of patch Tuesday in May 2014 . Well that is not entirely true, but instances running these operating systems are required to have installed KB2919355 (http://support.microsoft.com/kb/2919355) before the above … More A very important patch for Windows 8.1 and Server 2012 R2